Globe-valve.



No. 831.468. PATENTED SEPT. 18, 1906.

' J. POWELL.

GLOBE VALVE.

APPLIOATION I I'LED JULY 20, 1905.

UNITED STATES PATENT OFFICE.

JAMES POW ELLiOF CMNATI, OHIO.

GLOBE-VALVE.

Patented Sept. 18, 1906.

Application filed July 20,1905. Serial No- 270,539.

To all whom, it Trtay concern:

Be it known that 1, JAMES POWELL, of Cincinnati, in the county ofHamilton and State of Ohio, have invented certain new and usefulImprovements in Globe-Valves; and I do hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make andusethe same.

The primary object of this invention is to rovide improved means forreducing the friction upon the packing through which the valve-stem of aglobe-valve extends; and a further object is to provide in connectionwith a reversible valve-disk improved means for securin a perfectlyfluid-tight joint between the isk and its holder.

The invention will be hereinafter fully set forth, and particularlypointed out in the claims.

' In the accompanying drawings, Figure 1 is a vertical sectional view ofa globe-valve embodying my invention, the valve and its housing beingshown in elevation. Fig. 2 shows in perspective the valve-disk holder,its spindle, the valve-disk, and the retainingnut. Fig. 3. is asectional view of the valve, its housing, and a portion of the spindle.Fig. 4 is a sectional view on line-4 4, Fig. 1'.

Referring to the drawings, 1 designates the valve-casing, having acentrally-arranged port 2 and in line there ith an exteriorlythreadedneck 3, whereo is screwed a bonnet 4. This bonnet has in its baseportion a central chamber to accommodate packing 5 and an opening 6,through which extends the hollow s indle 7, carrying "at its lower endvalve-dis 8. The opening-6 is formed with opposite straight parallelwalls 9, while the spindle T is flattened on its sides so as to conformto and be guided by said straight walls. This spindle is provided with afemale thread 10, with which engages the exteriorly-threadedoperating-rod 12, working in a yoke 13, su erposed on bonnet 4. Theacking is he (1 in the chamber of bonnet 4 fly an ordinary packing-gland14, which causes the packing to accommodate itself to the flattenedsides of the spindle, thereby securing a perfectly tight joint. Byrotating the valverod 12 the spindle and valve will be moved toward oraway from the valve-seat surrounding port 2, and said spindle beingprevented from rotating by the opposite straight parallel walls of thebonnet causes but little screwed friction upon the packing, and inconsequence frequent repackihg is unnecessary.

The valve disk 8 is removably and rev'ersibly secured in its housing orholder 15, which latter is mounted on the lower reduced end 16 of thevalve-spindle, being retained thereon preferably by means of a wire key17, fitted in coincident grooves in the holder and the spindle end 16.The holder is formed in one piece, having a central cavity to receivethe spindle end 16 and an outer overhanging flange 18, which latter isconcaved on its lower inner face, as shown at 19, Fig. 2. It maybeintegral with the holder or detachably fitted thereon. It also has acentral exteri- Orly-threaded reduced portion 20, and at the inner endof the latter t e body portion of the holder is convexed, as at 21, Fig.2, such convexed portion being surrounded by the flange 18.

The valve-disk 8 is reversible, and has double convexed outer surfaces,as at 22 23, that which is exposed being designed to conform to thevalve-seat surrounding port 2, .while the other convexed surfaceconforms to and has a fluid-tight contact with the concaved face of theoverhanging modate the reduced portion of the valve-disk holder, andsaid central opening has double concaved surfaces, asat 24, one of whichsurfaces is designed to conformtoand have a fluid-tight contact with theconvexed portion 21, while the lower conc'avedportion is engaged by theconvexed surface 25 of a nut 26, onto the threaded portion of the holderand extending into the disk. Thus it will be seen that although thevalve is reversible, yet by reason of the double convex ity of its outersurfaceand the concavities of its central opening no matter which faceis presented outwardly a fluid-tight joint is secured between the valveand its holder, such valve being held on the latter by the nut 26, thetightening of which not only binds its convexity a ainst the'lower innerconcavity of the disk, I ut forces the upper concavity of the latteragainst the convexity of the holder,

while the upper convexity of -the disk is held tight against theconcaved surface of the overhan ing flange.

The a vantages of my invention will be age flange 18. This valve-diskhas a central opening to accom- Iro i'or is reduced to a minimum, themeans employed for that purpose bein manifestly simple and inexpensive.it wil l also be observed that i have provided simple and .ghlyefiicient means for obtaining reversioiiity in a valve-disk and. at thesame time insuring a fluid-tight oint between the disk and its holder.

i claim as my invention 1. Avalvehavingin combination, a valvecasing, abonnet removably secured thereon and having a yoke integral therewith,said bonnet having in its base portion a cntral chamber and an openingformed with two parallel flat sides, a packin gland for holding packingin said central 0 iamber adjacent to said opening, a valve, a hollowspindle carrying said valve and extended through said opening in thebonnet, opposite sides of said spindle being flattened to engage withand be guided by-the straight sides of said opening, said packing-glandcausing the packing to accommodate itself to the flattened sides of thespindle, and a valve-stem Working in said yolreand engaging said spindleso that by turning the valve-stem the spindle and its valve will becaused to move toward or away from the valve-seat.

2. In a globe-valve, in combination, the casing having a valve-seat, aspindle, a valveholder secured to said spindle concaved on its lowerinner face, and also having a dependin exteriorly threaded reducedportion, said holder being convexed at the inner end of said reducedportion, a valve-disk having double convened outer surfaces, a centralopening and double concaved inner surfaces surrounding said opening,said valve being reversible so that the side not in use will. conform tothe concavity of the holder and to theconvexity thereof and the nutfitted on said reduced portion, and lfliLVlHf a eonvexed portion forfitting snug against the lower concavity of the valve-disk.

3. in a globe-valve, in combination, the easing having a valve-seat, thespindle, the valve-holder secured to said spindle having an annularoverhanging flange concaved on its lower inner face, and also having acentral depending exteriorly-threaded reduced portion, said holder beingconvexed at the inner end of said reduced portion,- a valve-disk havingdouble convexed outer surfaces, at central opening and double concavedinner surfaces surrounding said opening, said valve being reversible sothat the side not in use will conform to the contour of the overhangingflange and to the convexity of the holder adjacent the reduced portionthereof, and

the nut fitted on said reduced portion, and

having-a convexed portion for fitting-snug against the lower concavityof the valve disk.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

JAMES POWELL. Witnesses:

G. SPENGEL, C. MEYER.

